Sari Horwitz ’79, investigative reporter for the Washington Post, was featured on MSNBC’s Hardball with Chris Matthews for her reporting work on the David Petraeus’s investigation.

Horwitz joined The Post’s investigations unit in 2006 after 23 years at the newspaper, where she had reported on crime, homeland security, education, and social services. She has been awarded the Pulitzer Prize three times. In 2003, she co-authored Sniper: Inside the Hunt for the Killers Who Terrorized the Nation and in 2009 co-authored Finding Chandra: A True Washington Murder Mystery. Among Horwitz’s other awards are the Robert F. Kennedy Grand Prize for reporting on the disadvantaged and the Investigative Reporters and Editors Medal. She previously worked at Congressional Quarterly.

Horwitz is a native of Tucson, Ariz., graduated from Bryn Mawr College, and holds a master’s degree in politics, philosophy, and economics from Oxford University.